Mixed

Higher-quality protein sources lead to greater strength gains during resistance exercise training, but do not significantly increase lean body mass (LBM) compared to lower-quality proteins.

When doing resistance training, choosing high-quality protein (like whey or meat) may help you get stronger, but it won't necessarily make you bigger than if you ate lower-quality protein (like soy or wheat), as long as you eat enough total protein. Don't overspend on 'premium' protein if your total intake is adequate.